What's that supposed to mean?

3 seconds sound clip from the Kindergarten Cop (1990) movie soundboard.

You can hear this line at 00:31:54 in the Blu-ray version of the movie.

Quote context

[...]

- Can I pet him?

- Sure, but one at a time, okay?

- Good. Okay, next one. Come on.

- Yes. Good. Yeah. Good. Now we're having fun.

(BELL RINGS, CHILDREN YELLING)

- What's that supposed to mean?

- Mrs. Hagley is a lot better than you.

- Is she? Is she really?

- My mom's a teacher in this school, and she's a lot better than you, too.

- Great.

[...]