The correct answer is:
1. Colleges and Universities (4 year)
2. Community Colleges (2 year)
3. Carrier schools
4. International schools
Worth, worthy, useful, valuable, profitable, interesting, meaningful, praiseworthy, commendable, rewarding, desirable, laudable, advantageous, noteworthy, creditable, cost-effective, appropriate, notable, suitable, penalty, instrumental, purposeful, substantial.