Millstone River School

Summary:

Millstone River School is an exceptional elementary school located in Plainsboro, New Jersey, serving grades 3-5 with a total enrollment of 831 students. As part of the highly-ranked West Windsor-Plainsboro Regional School District, Millstone River School consistently performs at the top of the state, with a statewide ranking between 62 and 293 over the past 10 years.

One of the school's key differentiating factors is its significantly higher percentage of Asian students (76.29%) compared to the surrounding schools and the state average. Millstone River School also ranks very high (top 15%) in the state for its support and performance of English Language Learner (ELL) students, indicating a strong focus on serving this population. While the school's overall academic performance is exceptional, with students outperforming the district and state averages in both English Language Arts and Mathematics, the performance of low-socioeconomic status (SES) students is an area that could use further attention.

Interestingly, Millstone River School's performance for Asian and African American students is significantly stronger than for Hispanic and White students, suggesting the need to investigate and address any achievement gaps. Additionally, the school has seen a notable increase in chronic absenteeism, from 1.4% in 2020-2021 to 9.6% in 2021-2022, which is an area of concern that the school should address. Despite these challenges, Millstone River School remains a high-performing institution, consistently earning 4- or 5-star ratings from SchoolDigger for the past 10 years, and its spending per student ($12,449 in 2018-2019) is in line with the surrounding schools, such as Cranbury School and Monmouth Junction Elementary School, which also demonstrate exceptional academic performance.


Detail:

Public 3-5

 75 Grovers Mill Road
       Plainsboro, NJ  08536


(609) 716-5500

District: West Windsor-Plainsboro Regional School District

SchoolDigger Rank:
245th of 1,342 New Jersey Elementary Schools

Per Pupil Expenditures:  $12,449 Help


Students who attend Millstone River School usually attend:

Middle:    Thomas R Grover Middle School
High:    West Windsor-Plainsboro High School South

Student/teacher ratio:  9.9 Help
Number of students:  831

Racial breakdown:

Asian:
76.3%
White:
9.3%
Hispanic:
5.8%
more

Free/discounted lunch recipients:  7.2% Help


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Performance Trends
Help
Compare Details Millstone River School ranks better than 81.7% of elementary schools in New Jersey. It also ranks last among 4 ranked elementary schools in the West Windsor-Plainsboro Regional School District. (See more...)
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Compare Details In 2023 the calculated Average Standard Score was 81.67. (See more...)
Help
Chronic absenteeism in a high school refers to a situation where students repeatedly miss school, with the threshold often defined as missing 10% or more of school days for any reason, excused or unexcused.
Student Body
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Compare Details Millstone River School has the largest elementary school student body size in the West Windsor-Plainsboro Regional School District. Racial makeup is: Asian (76.3%), White (9.3%), Hispanic (5.8%). (See more...)
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Compare Details 7.2% of students are receiving a free or discounted lunch. (See more...)
Teachers
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Compare Details The student/teacher ratio at Millstone River School is 9.9, which is the 3rd best among 4 elementary schools in the West Windsor-Plainsboro Regional School District. (See more...)
Help
Compare Millstone River School employs 83.3 full-time teachers.
Finance
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Compare Details The average total spent per student at Millstone River School is $12,449, which is the 2nd highest among 4 elementary schools in the West Windsor-Plainsboro Regional School District.
Schooldigger 2023 Rankings:

Millstone River School:

SchoolDigger ranks Millstone River School 245th of 1342 New Jersey public elementary schools. (See Millstone River School in the ranking list.)

Elementary School Test Score Ratings by Student Subgroup:


English Language Learner students:
Special Education students:
Low Socio Economic Status students:
Female students:
Male students:
Asian students:
African American students:
Hispanic students:
White students:


West Windsor-Plainsboro Regional School District:

SchoolDigger ranks West Windsor-Plainsboro Regional School District 95th of 615 New Jersey school districts. (See district ranking list.)


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Rank History for Millstone River School

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Rank History for all students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2003 77.17 297th 1204 75.3%
2004 81.85 138th 1298 89.4%
2005 75.94 296th 1303 77.3%
2006 77.40 257th 1314 80.4%
2007 75.86 263rd 1329 80.2%
2008 78.35 213th 1338 84.1%
2009 81.26 172nd 1346 87.2%
2010 81.34 171st 1354 87.4%
2011 83.79 114th 1360 91.6%
2012 82.90 130th 1363 90.5%
2013 85.18 96th 1367 93.0%
2014 84.60 121st 1363 91.1%
2015 92.57 62nd 1357 95.4%
2016 91.25 80th 1346 94.1%
2017 87.58 136th 1352 89.9%
2018 84.26 190th 1353 86.0%
2019 78.53 293rd 1360 78.5%
2021 89.98 125th 1317 90.5%
2022 82.59 247th 1345 81.6%
2023 81.67 245th 1342 81.7%
See the entire list of New Jersey Elementary School Rankings!

Rank History for English Language Learner students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 64.93 119th 434 72.6%
2019 79.76 73rd 463 84.2%
2021 86.19 40th 411 90.3%
2022 83.88 69th 489 85.9%
2023 85.13 66th 499 86.8%
See the entire list of Best New Jersey Elementary Schools for English Language Learner Students!

Rank History for Special Education students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 57.46 360th 1001 64.0%
2019 58.06 360th 1007 64.3%
2021 54.70 317th 868 63.5%
2022 57.91 325th 949 65.8%
2023 51.87 378th 958 60.5%
See the entire list of Best New Jersey Elementary Schools for Special Education Students!

Rank History for Low Socio Economic Status students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 25.95 773rd 942 17.9%
2019 22.36 736th 948 22.4%
2021 13.33 747th 839 11.0%
2022 68.58 192nd 863 77.8%
2023 32.10 619th 910 32.0%
See the entire list of Best New Jersey Elementary Schools for Low Socio Economic Status Students!

Rank History for Female students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 80.82 228th 1333 82.9%
2019 78.39 269th 1331 79.8%
2021 88.91 111th 1290 91.4%
2022 79.97 263rd 1326 80.2%
2023 78.67 273rd 1318 79.3%
See the entire list of Best New Jersey Elementary Schools for Female Students!

Rank History for Male students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 85.61 157th 1334 88.2%
2019 77.11 298th 1335 77.7%
2021 89.28 123rd 1297 90.5%
2022 83.61 210th 1324 84.1%
2023 83.09 224th 1315 83.0%
See the entire list of Best New Jersey Elementary Schools for Male Students!

Rank History for Asian students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 54.60 178th 370 51.9%
2019 39.42 237th 370 35.9%
2021 51.57 167th 339 50.7%
2022 45.31 206th 348 40.8%
2023 44.39 206th 346 40.5%
See the entire list of Best New Jersey Elementary Schools for Asian Students!

Rank History for African American students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2019 31.65 395th 522 24.3%
2021 62.65 112th 456 75.4%
2022 46.13 256th 494 48.2%
2023 54.68 191st 463 58.7%
See the entire list of Best New Jersey Elementary Schools for African American Students!

Rank History for Hispanic students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 19.81 705th 870 19.0%
2019 27.44 658th 899 26.8%
2021 30.75 664th 896 25.9%
2022 21.83 759th 953 20.4%
2023 53.28 401st 982 59.2%
See the entire list of Best New Jersey Elementary Schools for Hispanic Students!

Rank History for White students at Millstone River School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools NJ State Percentile SchoolDigger Rating
2018 48.47 554th 1022 45.8%
2019 49.28 535th 1023 47.7%
2021 39.49 593rd 964 38.5%
2022 41.69 593rd 976 39.2%
2023 40.78 592nd 975 39.3%
See the entire list of Best New Jersey Elementary Schools for White Students!

Data source: test scores: New Jersey Department of Education, rankings: SchoolDigger.com

As you review the school rankings data, please be aware that some of the information from certain demographics is missing. The reason for this omission is that the data has been redacted from the source data itself due to low population samples in these specific demographic groups.

Redacting data from low population samples is a necessary step to ensure the reliability and accuracy of the results, as small sample sizes may not be representative of the broader population. Additionally, this measure helps protect the privacy of individuals belonging to these demographic groups.

Millstone River School Test Scores
Tests: 
  
Grades: 
  
Years: 
  
Group by: 
District Scores:
State Scores:    
  
Subgroup: 





Data source: New Jersey Department of Education

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Enrollment information for Millstone River School

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Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1991 835 85 259 32 5 n/a n/a 0 1216
1992 904 105 328 37 0 n/a n/a 0 1374
1993 855 98 303 33 0 n/a n/a 0 1289
1994 887 89 302 41 2 n/a n/a 0 1321
1995 895 101 301 48 4 n/a n/a 0 1349
1996 895 101 301 48 4 n/a n/a 0 1349
1998 971 103 336 45 1 n/a n/a 0 1456
1999 988 102 383 57 3 n/a n/a 0 1533
2000 858 71 371 49 5 n/a n/a 0 1354
2001 808 72 435 51 0 n/a n/a 0 1366
2002 380 54 305 38 1 n/a n/a 0 778
2003 380 54 305 38 1 n/a n/a 0 778
2004 376 53 327 46 2 n/a n/a 0 804
2005 362 47 370 56 1 n/a n/a 0 836
2006 311 53 408 54 0 n/a n/a 0 826
2007 296 64 453 49 1 n/a n/a 0 863
2008 304 49 457 36 1 n/a n/a 0 847
2009 246 50 457 36 0 0 0 0 789
2010 245 63 520 40 0 1 0 0 869
2011 216 67 560 44 0 2 0 0 889
2012 193 64 541 44 0 0 1 0 843
2013 208 68 540 32 0 0 2 0 850
2014 182 49 561 41 1 0 5 0 839
2015 165 36 619 46 1 0 8 0 875
2016 169 51 767 45 1 1 17 0 1051
2017 164 47 754 57 0 1 12 0 1035
2018 159 46 806 63 0 0 14 0 1088
2019 128 37 793 48 0 1 16 0 1023
2020 109 39 782 48 2 1 18 0 999
2021 101 43 753 53 1 0 16 0 967
2022 96 45 666 44 0 0 18 0 869
2023 77 44 634 48 1 0 27 0 831

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity

For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at Millstone River School

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Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1991 1216 68.0 17.8 1.9
1992 1374 75.0 18.3 3.5
1993 1289 89.5 14.4 3.2
1994 1321 88.0 15.0 3.5
1995 1349 90.5 14.9 3.3
1996 1349 90.5 14.9 3.3
1998 1456 90.6 16.1 3.4
1999 1533 100.7 15.2 2.8
2000 1354 85.3 15.9 4.4
2001 1366 85.5 16.0 4.4
2002 778 58.7 13.3 3.2
2003 778 58.7 13.3 3.2
2004 804 60.1 13.4 5.2
2005 836 58.2 14.4 n/a
2006 826 60.2 13.7 5.7
2007 863 57.0 15.1 4.5
2008 847 55.0 15.4 4.1
2009 789 75.1 8.7 4.9
2010 869 62.0 14.0 5.9
2011 889 58.8 15.1 5.5
2012 843 61.1 13.7 7
2013 850 69.2 12.2 7.3
2014 839 69.0 12.1 4.8
2015 875 70.0 12.5 6.5
2016 1051 82.0 12.8 6.8
2017 1035 82.7 12.5 5.6
2018 1088 86.8 12.5 6.2
2019 1023 87.7 11.6 5.9
2020 999 84.1 11.8 6.3
2021 967 81.4 11.8 6.3
2022 869 81.6 10.6 8.3
2023 831 83.3 9.9 7.2

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch:

The National School Lunch Program (NSLP) provides low-cost or free meals to students in U.S. public and nonprofit private schools based on household income. Those with incomes below 130% of the poverty line receive free lunch, while those between 130% and 185% qualify for reduced-price lunch. The percentage of students receiving free or reduced-price lunch serves as a marker for poverty, as it reflects the socioeconomic status of families in a given school or district. A higher FRPL rate typically indicates a higher concentration of low-income families, suggesting that the school or district may face additional challenges in providing adequate resources and support for student success.

Student/Teacher Ratio Millstone River School

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Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1991 1216 68.0 17.8 1.9
1992 1374 75.0 18.3 3.5
1993 1289 89.5 14.4 3.2
1994 1321 88.0 15.0 3.5
1995 1349 90.5 14.9 3.3
1996 1349 90.5 14.9 3.3
1998 1456 90.6 16.1 3.4
1999 1533 100.7 15.2 2.8
2000 1354 85.3 15.9 4.4
2001 1366 85.5 16.0 4.4
2002 778 58.7 13.3 3.2
2003 778 58.7 13.3 3.2
2004 804 60.1 13.4 5.2
2005 836 58.2 14.4 n/a
2006 826 60.2 13.7 5.7
2007 863 57.0 15.1 4.5
2008 847 55.0 15.4 4.1
2009 789 75.1 8.7 4.9
2010 869 62.0 14.0 5.9
2011 889 58.8 15.1 5.5
2012 843 61.1 13.7 7
2013 850 69.2 12.2 7.3
2014 839 69.0 12.1 4.8
2015 875 70.0 12.5 6.5
2016 1051 82.0 12.8 6.8
2017 1035 82.7 12.5 5.6
2018 1088 86.8 12.5 6.2
2019 1023 87.7 11.6 5.9
2020 999 84.1 11.8 6.3
2021 967 81.4 11.8 6.3
2022 869 81.6 10.6 8.3
2023 831 83.3 9.9 7.2

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio

Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.
Finances

Per Pupil Expenditures for Millstone River School

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YearExpenditures from Federal FundsExpenditures from State and Local FundsTotal Expenditures Per Pupil (All Funds)
2019 $110 (0.9%) $12,339 (99.1%) $12,449

Data source: New Jersey Department of Education
Pre and Post Pandemic Data

Impact of COVID-19 on Millstone River School

The coronavirus has had a profound impact on education in America. Learning shifted online overnight, attendance numbers dwindled, and enrollment decreased. SchoolDigger.com is making it easier for you to better assess how COVID-19 has impacted your school. Through the collection of pre-pandemic (2019) and current data, SchoolDigger.com is sharing test scores, enrollment numbers and school demographics from schools across the country – and we make it easy to see how impacted schools compare locally and statewide.

Rankings

Rank
Pre-pandemic (2018-2019)
Rank
Post pandemic (2022-2023)
Change (%)
Ranks 293rd of 1360 Elementary schoolsRanks 245th of 1342 Elementary schools
 3.3%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
3rd Grade English Language Arts (Millstone River School)5743.7
 13.3%
   3rd Grade English Language Arts (West Windsor-Plainsboro Regional School District)71.659.3
 12.3%
   3rd Grade English Language Arts (New Jersey)50.242
 8.2%
3rd Grade Mathematics (Millstone River School)64.558.5
 6%
   3rd Grade Mathematics (West Windsor-Plainsboro Regional School District)74.265.2
 9%
   3rd Grade Mathematics (New Jersey)55.145.9
 9.2%
4th Grade English Language Arts (Millstone River School)71.268.6
 2.6%
   4th Grade English Language Arts (West Windsor-Plainsboro Regional School District)71.473.8
 2.4%
   4th Grade English Language Arts (New Jersey)57.451.3
 6.1%
4th Grade Mathematics (Millstone River School)72.766.1
 6.6%
   4th Grade Mathematics (West Windsor-Plainsboro Regional School District)74.469.8
 4.6%
   4th Grade Mathematics (New Jersey)5144.3
 6.7%
5th Grade English Language Arts (Millstone River School)76.779.2
 2.5%
   5th Grade English Language Arts (West Windsor-Plainsboro Regional School District)7881.2
 3.2%
   5th Grade English Language Arts (New Jersey)57.953.2
 4.7%
5th Grade Mathematics (Millstone River School)71.767.7
 4%
   5th Grade Mathematics (West Windsor-Plainsboro Regional School District)74.173.1
 1%
   5th Grade Mathematics (New Jersey)46.840.1
 6.7%

Student Body

Number of students
Pre-pandemic (2018-2019)
Number of students
Post pandemic (2022-2023)
Change (%)
Total Students1023831
 18.8%
African American3744
 18.9%
American Indian01
Asian793634
 20.1%
Hispanic4848
Pacific Islander10
 100%
White12877
 39.8%
Two or More Races1627
 68.8%
% Free/Discounted Lunch Recipients5.9%7.2%
 1.4%


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Frequently Asked Questions about Millstone River School

Students at Millstone River School are 76% Asian, 9% White, 6% Hispanic, 5% African American, 3% Two or more races.

Millstone River School ranks 245th of 1342 New Jersey elementary schools. SchoolDigger rates this school 4 stars out of 5.

In the 2022-23 school year, 831 students attended Millstone River School.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the New Jersey Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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