学校School高等学校high school小学校elementary school中学校junior high school学期term (school)学科study subject学会scientific society学級grade in school
期 き
延期postponement学期term (school)期間period期待expectation時期time長期long time period定期fixed term予期expectation期限term短期short term定期券commuter pass画期epoch-making期period期日fixed date期末end of term周期cycle末期closing years (period days)