The parents went to the county education bureau to report the situation.
Tips
culture
China's education administration runs in tiers: 教育部 (national Ministry) → 省教育厅 (provincial) → 市教育局 (city) → 县教育局 (county) → 乡镇中心校 (township). The county bureau handles hiring, budgets, and policy enforcement for all schools in its jurisdiction.
grammar
The 局 suffix marks a government bureau at a specific level. Pair with 部 (ministry), 厅 (provincial dept), 处 (division) to read the rank of any Chinese government body at a glance.