Charlie McBarron

Rachel Otwell/WUIS

Illinois students may have more schools to choose from in the near future.

Arthur Public Library via IMLS DCC (creative commons)

Illinois’ biggest and most indebted pension system is beginning to implement changes tied to the pension overhaul passed this month. But officials are also making plans in case the new law is struck down.

The Teachers Retirement System is by far the biggest of Illinois’ five pension systems, with well over 360,000 members. TRS is also the biggest factor in the pension funding problem, accounting for more than half of the combined $100 billion shortfall.