Department of Education officials said Monday that they do not have any estimates of how many borrowers would clear new, tougher standards proposed for claims of loan relief when a student is defrauded or misled by their college. The department’s proposed language would require a student borrower to demonstrate clear and convincing evidence that their college intended to deceive them or had a reckless disregard for the truth in making claims about job-placement rates, credit transferability and other outcomes.