Montgomery County Public Schools’ tax-supported operating budget has grown by more than 75 percent in the last decade, far outpacing the growth of other county agencies.

Even this year, as the county and schools fight over potential cuts to the schools’ funding and the county faces a $1 billion shortfall, the schools’ share of the budget is poised to grow to 57 percent of all agency operating budgets, the most in more than 11 years.