na-adjective
uniform; standardized; one-size-fits-all
Often carries a negative nuance of lacking individuality or flexibility; used for systems, rules, education, and mass production.
画一的な教育は生徒の個性を伸ばさない。
Uniform education does not develop students' individuality.
この
This company's rules are too standardized and don't fit the actual situation on the ground.
均一 emphasizes physical or quantitative uniformity (e.g., 均一な厚さ 'uniform thickness'), whereas 画一的 is more about abstract systems or approaches.
From 画一 (かくいつ, 'uniformity') + 的 (てき, '-like'). 画一 is composed of 画 ('picture, plan') and 一 ('one'), suggesting a single standard.