The hearing before the county board shall be open to the public and shall be stenographically reported, and the county board may contract for the reporting of such hearing. The county board shall hear the parties at issue and their attorneys, if any, and shall determine the matter in a summary manner setting forth its findings and conclusions in writing. If it shall find that such teacher shall have been discriminated against, it shall require the board of trustees to discontinue such discrimination. The county board shall give notice by registered mail to both parties of its decision.