In Systems-of-Information Systems (SoIS), accountability encompasses strategies that encourage responsible behavior considering SoIS purposes. However, its implications remain unclear when it focuses on evaluation strategies in SoIS. In order to fulfill these promises, the AESoIS or "Accountability Evaluation in SoIS" is proposed. The AESoIS solution (including a framework and tool) aims to support SoIS managers to understand organizational scenarios and propose solutions related to accountability evaluation based on three criteria: engagement, management, and regulation. Such an approach is composed of three AESoIS macroprocesses: (i) prepare data collection; (ii) define accountability indicators database; and (iii) generate a visual presentation of an organizational problem, as an investigated scenario. In addition, the AESoIS was evaluated with managers in educational organizations supported by SoIS based on a feasibility study. Therefore, the relevance of understanding and modeling SoIS scenarios is highlighted, as well as the AESoIS effectiveness.