The new California minimum wage law will ultimately have a big impact on Manteca’s largest employer — the Manteca Unified School District. The new law that raises minimum wage from $10 per hour today to $15 by Jan. 1, 2022 , however, will have a minimal impact at first.That’s because the only support staff making minimum wage are 130 student workers or interns. Under the new law they are in line to be bumped up to $10.50 an hour on Jan. 1, 2017 as they start moving toward $15 an hour.But in practical terms a large chunk of the district’s hourly classified employees such as nutritional service aides, yard supervisors, bus drivers are assured of pay increases through at least 2022.That’s because any increase in the base step of the classified salary schedule automatically increases all other ranges and steps.If the base step of 9A — currently $13.61 per hour which is what nutritional services assistants are paid — is increased, the next five pay step are increased 5 percent followed by 3.5 percent for the following steps.That is in addition to 217 positions available for jobs such as yard supervisors.