Fox Kids Network will be driving “The Magic School Bus” beginning in fall 1998.Fox Kids has picked up the rerun rights to PBS’ animated “science adventure” series, produced by the TV wing of publishing giant Scholastic Inc. The deal gives PBS “educational record” rights to the show through 1999, meaning teachers can use homemade videotapes of the show in the classroom without running afoul of copyright law. “The Magic School Bus,” which bowed on PBS in 1994, features the voice of Lily Tomlin as wayfaring teacher Ms. Frizzle, who takes her grade-school class on field trips with a scientific bent. PBS will continue to air new episodes of the show through next fall. Scholastic Entertainment, headed by Deborah Forte, also produces the hit kidvid series “Goosebumps” for Fox Kids and the upcoming “Animorphs” for Nickelodeon.