Serving 169 students in grades Kindergarten-8, Sandalio Marcano ranks in the top 50% of all schools in Puerto Rico for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 20-24% (which is approximately equal to the Puerto Rico state average of 23%). The percentage of students achieving proficiency in reading/language arts is 35-39% (which is approximately equal to the Puerto Rico state average of 36%).
The student-teacher ratio of 7:1 is lower than the Puerto Rico state level of 10:1.
Quick Facts (2026-27)
- Grades: Kindergarten-8
- Enrollment: 169 students
- Student-Teacher Ratio: 7:1
- Overall Testing Rank: Top 50% in PR
- Math Proficiency: 20-24% (Top 50%)
- Reading Proficiency: 35-39% (Top 50%)
- Science Proficiency: 30-39% (Top 50%)
- Attendance Zone: SU Sandalio Marcano serves the eastern part of Caguas, PR, covering an area of approximately 21.3 square miles. This attendance zone typically allows for a 10-12 minute drive to the school, with the furthest edge located about 6.5 miles away.
- Source: National Center for Education Statistics (NCES), PR Dept. of Education
School Overview
Sandalio Marcano's student population of 169 students has declined by 19% over five school years.
The teacher population of 23 teachers has grown by 9% over five school years.
Grades Offered
Grades Kindergarten-8
(No virtual instruction)
(No virtual instruction)
Total Students
169 students
Total Classroom Teachers
23 teachers
School Calendar
School Rankings
Sandalio Marcano ranks within the top 50% of all 839 schools in Puerto Rico (based off of combined math and reading proficiency testing data).
The diversity score of Sandalio Marcano is 0.00, which is less than the diversity score at state average of 0.01. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#334 out of 839 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
20-24%
23%
Reading/Language Arts Test Scores (% Proficient)
35-39%
36%
Science Test Scores (% Proficient)
30-39%
36%
Student-Teacher Ratio
7:1
10:1
American Indian
n/a
n/a
Asian
n/a
n/a
Hispanic
100%
100%
Black
n/a
n/a
White
n/a
n/a
Hawaiian
n/a
n/a
Two or more races
n/a
n/a
All Ethnic Groups
Chronically Absent Students
(22-23)15.4%
42.3%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
78%
74%
Eligible for Reduced Lunch
14%
14%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), PR Dept. of Education
Frequently Asked Questions
What is Sandalio Marcano's ranking?
Sandalio Marcano is ranked #334 out of 839 schools, which ranks it among the top 50% of public schools in Puerto Rico.
What percent of students have achieved state testing proficiency in math and reading?
20-24% of students have achieved math proficiency (compared to the 23% PR state average), while 35-39% of students have achieved reading proficiency (compared to the 36% PR state average).
How many students attend Sandalio Marcano?
169 students attend Sandalio Marcano.
What is the racial composition of the student body?
100% of Sandalio Marcano students are Hispanic.
What is the student-teacher ratio of Sandalio Marcano?
Sandalio Marcano has a student ration of 7:1, which is lower than the Puerto Rico state average of 10:1.
What grades does Sandalio Marcano offer ?
Sandalio Marcano offers enrollment in grades Kindergarten-8 (No virtual instruction).
What school district is Sandalio Marcano part of?
Sandalio Marcano is part of Puerto Rico Department Of Education School District.
School Reviews
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