Grossmont High School

La Mesa, CA 91944

Phone: (619) 668-6000
Fax: (619) 463-7108
District: Grossmont Union High School District

7

GreatSchools Rating

public • Grades 9,10,11,12 • 2172 students

Grossmont High School, a public school located in La Mesa, CA, serves grades 9-12 in the Grossmont Union High School District.It has received a GreatSchools Rating of 7 out of 10, based on a variety of school quality measures.

Grossmont High School is a public school located in La Mesa, CA. 2172 students attend Grossmont High School.

School Ratings

Category Rating Details
Test Scores 7/10 The Test Score Rating examines how students at this school performed on standardized tests compared with other schools in the state. The Test Rating was created using 2025 California Assessment of Student Performance and Progress (CAASPP) data from California Department of Education, and using 2025 California Science Test data from California Department of Education.
College Readiness 6/10 The College Readiness Rating uses this high school's graduation rates, college entrance exam participation and performance, or AP, IB, or Dual Enrollment participation to determine how well schools are preparing students for success in college and beyond. The College Readiness Rating was created using 2019 SAT percent college ready data from California Department of Education, using 2019 Average ACT score data from California Department of Education, using 2019 ACT percent college ready data from California Department of Education, using the following data from the 2021 Civil Rights Data Collection: percentage of students enrolled in IB, AP or Dual Enrollment classes in grades 9-12, using 2025 4-year high school graduation rate data from California Department of Education, using 2025 Percent of students who meet UC/CSU entrance requirements data from California Department of Education, and using 2025 demographic data from California Department of Education.

Posted: May 14, 2026

In this school we are always supported by our teachers, and have a lovely gifted program. Freshmen are encouraged to pace themselves to prevent burn-out, and to take more challenging classes for themselves in order to improve.

Posted: May 14, 2026

Posted: May 14, 2026

Posted: May 14, 2026

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Posted: May 14, 2026

Posted: May 14, 2026

Posted: May 11, 2023

I love this school it is the best and the environment is really swell and nice

Posted: May 11, 2023

Posted: May 11, 2023

Posted: May 11, 2023

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Posted: May 11, 2023

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Posted: May 11, 2023

Posted: May 2, 2023

Posted: May 2, 2023

Posted: May 2, 2023

Posted: May 2, 2023

Posted: May 2, 2023

Posted: May 2, 2023

Children are not held accountable for behavior problems in halls or class (ex. Fighting). This is coming from a family member of a child who needs to be held more accountable for actions. I’m told you are not able to wear some colors do to gang activity. Even though ever teacher is a mandated report some do not report children skipping school for long periods of time.

Posted: May 2, 2023

Posted: May 2, 2023

Posted: August 31, 2015

Honesty, integrity, and fairness are traits you're going to learn (or not) at home. The school can only try to reinforce these characteristics through classroom/campus "rules and conduct expectations"

Posted: August 31, 2015

For the years 2010 through 2015, our 2 daughters attended Grossmont High School. Their experience as students, and ours as parents was exceptional. There were plenty of rigorous Honors and AP courses. In fact, our oldest AP tested out of 4 GE college courses. That's like $$ in the bank!

We found the faculty (teachers & counselors) to be dedicated, knowledgeable, and accessible. Both of our kids received regular information on colleges and scholarships, beginning in their junior years. The web portal allowed to see their grades and progress, with most of their teachers posting grades in a timely manner.

There were plenty of clubs, sports, and other activities to make for a well-rounded student. ASB, Track/Cross Country and Softball were all positive experiences.

Is there diversity at Grossmont? Absolutely! Is there diversity in the world after High School? Are there gangs or drugs at Grossmont? Never saw evidence of either at any games or other school functions, though I'm not naïve enough to say they don't exist.

Bottom line,... COMMUNICATION is the key, both with your child/student and the school. Know what's going on with your kid, their friends, and their school.

Lastly, both daughters are attending the colleges of their choice, and as of this posting, succeeding quite well. :)

Posted: August 9, 2015

I'm a former student of Grossmont. I was a straight A student here. This school in no way prepared me for college. I don't know how to apply for scholarships and I only have a slight idea on how to apply to a university. I had to just figure it out for myself and use google to teach me. If you want your child to succeed send them to a school like High Tech High. Out of my average group of friends, I'm the only one still in college. Everyone I know dropped out within the first year. The things I know about my graduating class are way different than what my boyfriend (who graduated from High Tech) knows about his. His classmates are going to Yale and Princeton while some of mine are already in jail and are college drop outs. Although the typical ASB kids are still attending college, the majority of the people I still follow on social media dropped out already. It amazes me how little this school prepares these kids. Not only that but the office staff is down right disrespectful to students and parents. They refuse to even answer their phones. If you care about your child's education, don't send them here.

Posted: August 9, 2015

Posted: August 9, 2015

Posted: August 9, 2015

Posted: June 27, 2013

Excellent school... NJROTC Program is stellar... tough love teachers... new facilities... solid standardized test scores... rich school history... rigorous safety & security standards... a solid high school experience, through & through.

Posted: March 27, 2013

After we were both educated in private & private parochial schools back East, my wife & I were a bit concerned that our child would be attending public schools here in California, especially with the severe recent education budget cuts. But, like so much in life, we learned you get out of it what you put into it. The GUHS District has greatly upgraded Grossmont's facilities with a New Fully-Outfitted Science Building, Technology Equipment, and a brand New English/Liberal Arts Building coming on line this upcoming Fall. The NJROTC Program is stellar. The teachers care, are proactive, and are fully committed to each student's educational experience and safety. Our child has taken the bull by the horns, is in both AP & Honors classes, and keeps focused on the task at hand and out of trouble. He realizes that a school is only as good as the effort you put into it, and so far., so great! There's a bit of a "ganglike Hispanic clique" that attempts intimidation at times, but if you just let it go, they seem pretty harmless. We like the solid history & tradition at Grossmont and wouldn't switch to any other school around. Thanks to all Grossmont's teachers& staff for a job very well done!

Posted: October 25, 2012

Grossmont High School is one of the only schools which has one of the best programs out there for teen aged kids. They have an excelling NJROTC Program which not only allows students learn the military life but it also allows them to be able to get scholarships and simply looking at the reviews it saddens me that its the parents giving Grossmont bad reviews, and what saddens me even more its that it's about one or two incidents that have caused them to say bad things about the school. Meanwhile, students give outstanding reviews and they are the people going to school, not the parents. In all honesty if you are not going to say something nice about the school because you are a parent and its about how your child is not doing so great in class, it's because he/she doesn't care to work hard enough to pass a class. The classes are fairly simple and they only get complicated if you allow them to slack off in class. This is not a teacher or a parent problem, it is a student problem. All in all, the greatest times I have spent in four years where at this campus, because not only is it a school, but it becomes a home.

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