Why Winston Brooks stepped down as superintendent of New Mexico’s largest school district remains a mystery.

The custodian of records at Albuquerque Public Schools turned back Tuesday the initial part of a request filed separately from New Mexico Watchdog and the New Mexico Foundation of Open Government to obtain details about the $350,000 taxpayer-funded buyout the school district worked out for Brooks.

APS hired a law firm to conduct an investigation into what  the school board described only as a “serious personnel issue” concerning Brooks that led to the settlement.