Sebastian Questa Elementary
Mountain House, CA · Middle School
Sebastian Questa Elementary is a middle school in Mountain House, CA with 910 students enrolled and a 75% proficiency rate. Part of Lammersville Joint Unified. NCES data from the U.S. Department of Education.
About This School
Sebastian Questa Elementary is a middle school located in Mountain House, California. The school serves 910 students. The student-to-teacher ratio is 23.3:1.
According to EDFacts assessment data, 75% of students meet grade-level proficiency standards in combined math and reading.
10% of students qualify for free or reduced-price lunch.
Sebastian Questa Elementary is part of the Lammersville Joint Unified in California.
How This School Compares
Sebastian Questa Elementary has 910 students enrolled, making it smaller than the average school in Lammersville Joint Unified (940 students). Its 75% proficiency rate is 9 percentage points above the district average of 67%. Compared to the California state average of 45%, the school performs 30 points higher. The 23.3:1 student-teacher ratio is above the national average of 16:1.
Frequently Asked Questions
Sebastian Questa Elementary has 910 students enrolled. The student-to-teacher ratio is 23.3:1.
According to EDFacts data, 75% of students at Sebastian Questa Elementary meet grade-level proficiency standards in combined math and reading assessments.
Sebastian Questa Elementary is part of the Lammersville Joint Unified in Mountain House, California. You can view all schools in this district on the district page.
All data on this page comes from the National Center for Education Statistics (NCES) Common Core of Data and EDFacts assessment results. These are official federal datasets published by the U.S. Department of Education.
School profiles are built from NCES directory data and EDFacts assessment results. Proficiency rates reflect combined math and reading performance. Graduation rates are reported for high schools with available data.
The this entity record above pulls directly from NCES Common Core of Data and EDFacts. What follows is the per-entity context — how this entity sits in the broader U.S. K-12 school outcomes and enrollment distribution and which underlying factors drive the headline numbers.
Every number on this page links back to NCES Common Core of Data and EDFacts; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for this entity is typically a peer within U.S. public schools and districts with similar size, similar exposure, or similar geography — not the national-level summary alone.
Source: NCES Common Core of Data, 2026.