Table schema:
CREATE TABLE basketball_match (school_id VARCHAR, acc_percent VARCHAR); CREATE TABLE university (Primary_conference VARCHAR, school_id VARCHAR)

Question: What is the primary conference of the school that has the lowest acc percent score in the competition?
SQL: SELECT t1.Primary_conference FROM university AS t1 JOIN basketball_match AS t2 ON t1.school_id = t2.school_id ORDER BY t2.acc_percent LIMIT 1