WASHINGTON - Jill Biden is going back to her whiteboard.After months of teaching writing and English to community college students in boxes on a computer screen, the first lady resumes teaching in person Tuesday from a classroom at Northern Virginia Community College, where she has worked since 2009.She is the first first lady to leave the White House and log hours at a full-time job."There are some things you just can’t replace, and I can’t wait to get back in the classroom," she recently told Good Housekeeping magazine.The first lady has been anxious to see her students in person after more than a year of virtual teaching brought on by a pandemic that continues to challenge the Biden administration.A working first lady is a "big deal,".