1804 - Charter granted by the General Court of Massachusetts on February 10.
1805 - William Barrows, Jr. opens the Academy on September 3.
1807 - Weekly tuition set at 20 cents, reduced from the original fee of 25 cents.
1808 - With 60-70 volumes, the town's secret Tryocinic Adelphi Society forms a library.
1814 - Deacon Barrows' house burns on December 14. Lost in the fire were the treasurer's records and the original records of the Tyrocinic Adelphi Society.
1819 - The Academy building burns. In his "little ewe lamb" speech, Deacon Barrows successfully thwarts a plan to move the school to Paris Hill.
1821 - New Academy building is ready for use.
1826-27 - Hannibal Hamlin, later Lincoln's Vice President, attends Hebron.
1829 - Trustee House is built about where Atwood Hall is today. It serves as the preceptor's house and as a dormitory.
1837 - Deacon Barrows dies. He served as a trustee for 33 years.
1844-1845 - The school catalog lists 55 students for the fall term and 106 for the spring. The terms were 20 weeks long, with a four-week summer vacation and an eight-week winter break.
1847 - The third Academy building is erected. It is a two-storey brick building with a tower and belfry rising in front.
