[2] Started as a lower secondary school in 1889, the founder, the first Vicar Apostolic of Thrissur, Mar Adolphus Edwin Medlycott, named it St. Thomas’ College.

In 2004, St. Thomas' was accredited with a B++ grade by NAAC, an autonomous organization instituted by the UGC.

The year 2018-2019 was celebrated as Sathyaprayan 1919-2019, the centennial as second grade college and the commemoration was inaugurated by Shri Ram Nath Kovind, President of India, on 7 August 2018.

The college offers graduate, postgraduate and Ph.D. level programmes in a wide range of subjects.

The library collection includes general, multidisciplinary, language and literature books in Malayalam, Sanskrit, Hindi and English language and literature along with the books in humanities, social sciences and natural, physical and mathematical sciences.

The College Library provides open access to its documents and any member can browse through the collections which are arranged according to Dewey Decimal Classification (DDC).

The library provides reference, scholarly literature search services and similarity check for plagiarism.

The seating capacity of the library is 408 which include carrels, research cubicles and learning stairs.

The programme is delivered entirely online using virtual learning platform and consists of three modules: information literacy, academic writing and communication, and intellectual property and its management.

Training on electronic reference management and awareness about web research profiles, citation metrics, intellectual property rights, ethical methods of research and publishing, pseudo-journals and plagiarism are also imparted by the department.

In the first quarter of 2020, the department started to offer the UGC approved two credit course Research and Publication Ethics online through St Thomas E-learning Platform (STEP), the Moodle instance of the college.

Later it was offered online in the month of August in 2020 and in the following years and was attended by about 900 participants from different parts of India.