NSES Content Standard B 
Physical Science: Motions and forces
Grades 9-12, page 180

Electricity and magnetism are two aspects of a single electromagnetic force. Moving electric charges produce magnetic forces, and moving magnets produce electric forces. These effects help students to understand electric motors and generators.
 

 
Benchmark 4G The Physical Setting: Forces of Nature
Grades 6-8, page 95
Electric currents and magnets can exert a force on each other.

Benchmark 4G The Physical Setting: Forces of Nature
Grades 9-12, page 97
Magnetic forces are very closely related to electric forces and can be thought of as different aspects of a single electromagnetic force. Moving electric charges produce magnetic forces and moving magnets produce electric forces. The interplay of electric and magnetic forces is the basis for electric motors, generators, and many other modern technologies, including the production of electromagnetic waves.