@base . a , ; "Distribution of high school graduates" . a . a , , ; , , ; "Distribution of high school graduates." ; ; ; "0098-423X" ; ; "0098-423X" ; ; "0098-423X" ; "Distribution of high school graduates." , "Distribution of high school graduates" ; . a ; "0098-423X" ; . . a ; "0098-423X" ; . a ; ; "20050916120900.0"^^ ; ; . a ; . "Massachusetts" .