Claire asks the teacher to quantify the dead kid's incompetence, and the teacher says his I.Q. was around 40. Claire then asks how that translates to intellectual age, and the teacher says "It doesn't. We don't make those kinds of judgments." But the definition of Intelligence Quotient is intellectual age divided by physical age. So before an I.Q. can be calculated, intellectual age must be assessed.
The title cards indicate Thursday September 10. Since the air date was November 1994, the closest year that had not passed for Thursday September 10 was 1992. When Briscoe and Logan read a kid's rap sheet, they learn he died in March 1993, about six months after the events shown, so he would have still been alive in September 1992.
When Mr. Osborne finishes his cross examination of Guinivere, he says to her, "Thank you Claire"