The premiere of Fox’s “Are You Smarter Than a 5th Grader” broke ratings records Tuesday night, becoming Fox’s highest-rated series premiere in 13 years.

Powered by an “American Idol” lead-in, the half-hour game show scored an 11.2 rating among adults 18 to 49, according to preliminary Nielsen figures. That makes it the highest-rated series premiere on any network in more than five years. (Previous top premiere was NBC’s “Inside Schwartz” in 2001; the last Fox show to hit those heights was “The George Carlin Show” in 1994.)

The 90-minute “Idol” posted a 12.1, with “5th Grader” achieving the highest retention ever of an “Idol” audience (93 percent).

CBS came in second, with “NCIS” (3.7) and “The Unit” (3.4) both bouncing back from season lows last week, followed by a repeat “Criminal Minds.”

NBC was third with “Dateline” (2.2), “Law & Order: Criminal Intent” (2.8) and a “Law & Order: SVU” repeat.

ABC was fourth with a repeat “America’s Funniest Videos,” “Primetime” (2.1) and special “To Iraq and Back: Bob Woodruff Reports” (2.8).

On The CW, “Gilmore Girls” (1.8) and “Veronica Mars” (1.1) were up from the prior week.

(Editor: Horowitz)