Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28744929_2 ( record_at_school VARCHAR, head_coach VARCHAR )

### Question ###
What is the Record at School of Tom O'Brien's team?

### Accurate SQL ###

SELECT record_at_school FROM table_28744929_2 WHERE head_coach = "Tom O'Brien"