Principal Robert Giovannoni, also known as “Mr. G.”, will retire this June as principal of Field-Stevenson School, 925 Beloit Ave. Giovannoni has been in District 91 for 19 years. Supt. Louis Cavallo told the school board at its Dec. 8 meeting that 30 applications for the principal post had been received so far and the administration expected around 50. An evaluation panel of two principals, two teachers and two parents will score each candidate over winter break based on a rubric created by the district. The top three candidates should be presented to the board by February, Cavallo predicted. Cavallo said D91 is only looking at candidates with executive experience. “We’re going to find the best of the best,” he told the board.