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S
41.6/ 100
Success Index (US)
Lower 50%

#2420 of 5,693 elementary schools in California
#30896 of 50,301 nationally

How is this calculated?
Students
144
Enrollment
144
Source: NCES CCD
Free/reduced-price lunch
24.3%
Source: NCES CCD
Students per teacher
28.8
Source: NCES CCD

About River Montessori Elementary Charter

River Montessori Elementary Charter is a charter elementary located in Petaluma, in the River Montessori Elementary Charter District school district of California, United States. It caters for Grades K–6. In 2025 it enrolled 144 students. Publicly funded charter schools operating under a performance contract; free to attend.

Its Success Index (US) is 41.6 out of 100, placing it in the lower 50% of elementary schools in United States and 2420th of 5,693 ranked elementary schools in California. Its strongest component is community advantage (fewer free/reduced-price lunch) (86th percentile), and its weakest is math proficiency (7th percentile).

Other published figures: enrollment 144.

There are 33 schools in Petaluma; River Montessori Elementary Charter ranks 25th of 30 scored schools there.

Success Index (US) breakdown

Each component is a percentile against elementary schools across United States.

  • Math proficiency (30%)17%
  • Reading proficiency (30%)47%
  • Community advantage (fewer free/reduced-price lunch) (25%)24.3%
  • Students per teacher (15%)28.8

The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.

Published measures

All figures published for River Montessori Elementary Charter by the official sources.

Enrollment
144
Students enrolled in the latest NCES directory year.
Free/reduced-price lunch
24.3%
Share of students eligible for free or reduced-price lunch.
Students per teacher
28.8
Enrollment divided by FTE teachers; not class size.
Reading proficiency
47%
Share of tested students proficient or above (all students, all grades).
Math proficiency
17%
Share of tested students proficient or above (all students, all grades).

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Schools near River Montessori Elementary Charter

Closest schools by straight-line distance, with their Success Index (US).

Similar schools

Charter elementary schools in California with a comparable Enrollment.

Frequently asked questions

Is River Montessori Elementary Charter a good school?

River Montessori Elementary Charter has a Success Index (US) of 41.6 out of 100 (Lower 50% of elementary schools in United States) and ranks #2420 of 5,693 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.

Where does River Montessori Elementary Charter rank in California?

River Montessori Elementary Charter ranks #2420 of 5,693 elementary schools in California and #30896 of 50,301 nationally on the Success Index (US) (2025 data).

How many students attend River Montessori Elementary Charter?

River Montessori Elementary Charter had 144 students in 2025.

Is River Montessori Elementary Charter a elementary school or a high school?

River Montessori Elementary Charter is classified as a elementary covering Grades K–6. It is a charter school.

What other schools are near River Montessori Elementary Charter?

There are 10 schools within 15 km of River Montessori Elementary Charter; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.