The best replacement for quarter is semester.

The best alternatives to quarter are rated as following:
★★★★★  semester
★★★  semester hours
★★★  semester units
★★★  semester system
★★  semester credits
★  quarter
★  trimester
★  riverside
★  semester college
★  fourth
★  eighth
  quartile
  half year depreciation
  an eighth
  dime
  bourbon street
  coronado springs
  garden district
  quarter yard

Your alternative for quarter is not listed? Suggest!
Speaking about quarter, one probably shouldn't forget about eagle on both sides.

Other search terms related to quarter and their ratings are:
★★★★★ eagle on both sides
★★★★★ heads on both sides
★ flaw
★ mistake
You have in mind a companion for quarter and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of quarter in all years. Click on graph for more.
quarter
semester
semester hours