Auditor Beth Wood's office said she wanted to see if the state could save money on textbooks, but it couldn't complete a performance audit because the DPI does a poor job tracking whether local school districts have enough or too much money for classroom books.
Wood's report says the department doesn't receive textbook inventory reports, including how many books have been lost or damaged beyond repair.
The state set aside more than $35 million in last fiscal year's budget for textbooks. The textbook budget was slashed because of the budget crisis.
In her response that's attached to the report, State Superintendent June Atkinson largely agrees with the findings but said an annual inventory wouldn't be necessary.