Average 5.0 based on 3 teacher ratings
Costello is a Math teacher at Christian Brothers High School located in Sacramento, California. When comparing Costello's ratings to other teachers in the state of California, Costello's ratings are above the average of 4.2 stars. Additionally, the average teacher rating at Christian Brothers High School is 4.13 stars.
5
Easiness
5
Helpfulness
5
Clarity
4
Easiness
5
Helpfulness
5
Clarity

I struggled through math until I took his review course my senior year and suddenly it was all clear. SAT score went up 60 points

5
Easiness
5
Helpfulness
5
Clarity

Best math teacher ever.

5
Easiness
5
Helpfulness
5
Clarity

Coolest math teacher one could ever have

Similar math teachers like Costello?

15 Ratings
14 Ratings
13 Ratings
12 Ratings
9 Ratings

Learn more about Christian Brothers High School

5-star
71%
4-star
11%
3-star
8%
2-star
2%
1-star
5%
Based on 935 Ratings
Christian Brothers High School is located in Sacramento, California with an average teacher rating of 4.13 stars. When comparing Christian Brothers High School's teachers to other teachers in the state of California, Christian Brothers High School's teachers are below the average of 4.2 stars. Christian Brothers High School ranks 375 amongst all High Schools in the state of California. Learn More