City Council Speaker Corey Johnson blasted the Department of Education for this year’s student transit disaster — but gave schools Chancellor Richard Carranza a temporary pass.

Speaking at a hearing on the transportation crisis that marred the start of the school year, Johnson called the mess “unconscionable” and ripped the DOE for “insufficient planning.”

Enraged parents blasted the DOE for late and no-show buses, while a whistleblower accused officials of improperly approving bus drivers with troubling histories.

But even as Johnson ripped the DOE, he praised Carranza — who began his first full year at the helm in September — for taking swift action in addressing the problem.

Carranza canned former school CEO Eric Goldstein and reassigned top administrator Elizabeth Rose before she recently resigned from the department outright.