The Montgomery County Council’s education committee said Monday morning that the county could be on the hook for millions of dollars in spending on classroom technology never approved by the council.

The expenditures — about $13 million during four years despite council approval for less than $1 million for one year — were used for the l

ease of 2,600 interactive online chalkboards that cost about $5,000 apiece. Portions of the cost will be covered each year by federal rebates for school district connectivity.