聖約翰學院
At the beginning of his career he was an administrator for Lake Erie College and later Saint John's College. 1962 marked his transfer to Cornell College as its president. During his time as president of Boston University, from 1967 to 1970, the school was facing much political turmoil from the Students for a Democratic Society and one of the schools African American organizations. At the time of Christ-Janer's inauguration both organizations protested with a sit-in in the presidential office. Although Christ-Janer made attempts to quell the turmoil at the school, ultimately his efforts proved to be unsuccessful and he resigned in July 1970.