'Are You Smarter Than a 5th Grader?' scores low ratings in return

Fox's "Are You Smarter Than a 5th Grader?" returned after four years off the air, scoring low marks in its comeback debut. That said, it sure fared better than the limp debut of last summer's "I Wanna Marry Harry."

NBC easily topped Tuesday, despite being down in the demo 13 percent from last summer's season opener. Afterward, "I Can Do That!" opened to decent numbers.

In other premiere news, ABC's "Extreme Weight Loss" started down 31 percent from last year's premiere.

Also Read: David Muir's ABC Newscast Wins First May Sweeps in 8 Years

More to come …