CREATE TABLE school_bus (school_id VARCHAR)
CREATE TABLE school (type VARCHAR, school_id VARCHAR)

Show the type of school and the number of buses for each type.
SELECT T2.type, COUNT(*) FROM school_bus AS T1 JOIN school AS T2 ON T1.school_id = T2.school_id GROUP BY T2.type
SELECT "T2"."type", COUNT(*) FROM "school_bus" AS "T1" JOIN "school" AS "T2" ON "T1"."school_id" = "T2"."school_id" GROUP BY "T2"."type"