This ministry provides "Great Doctrines Of the Bible," a series of 36 lessons. You can earn certificates or a diploma by registering via mail.
Offers free courses for ages 3 to 100+ in English and Spanish. You can request materials at BibleStudiesByMail.org . free baptist bible correspondence courses by mail link
While not exclusively labeled "Baptist," these reputable Christian organizations provide similar free postal Bible studies: This ministry provides "Great Doctrines Of the Bible,"
Offers a completely free mail and prison correspondence program. There are no fees for enrollment, materials, or certificates. You can sign up through their Mail Correspondence Studies page. free baptist bible correspondence courses by mail link