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 teachers ( LastName TEXT, FirstName TEXT, Classroom INTEGER )
TABLE: CREATE TABLE list ( LastName TEXT, FirstName TEXT, Grade INTEGER, Classroom INTEGER )

### Question ###
For each fourth-grade classroom, show the classroom number and the total number of students using it. Show the correlation.

### Accurate SQL ###

SELECT Classroom, COUNT(*) FROM list WHERE Grade = "4" GROUP BY Classroom