A census of small Schurian association schemes

Using the classification of transitive groups of degree n, for 2≤n≤48, we classify the Schurian association schemes of order n, and as a consequence, the transitive groups of degree n that are 2-closed. In addition, we compute the character table of each association scheme and provide a census of important properties. Finally, we compute the 2-closure of each transitive group of degree n, for 2≤n≤48. The results of this classification are made available as a supplementary database.