2 Cool 4 Skool sold 760 copies in its release week, and debuted at number 19 on the Week 25 issue of the
Gaon Album Chart for the period dated June 9 to 15, 2013. The album went on to sell a cumulative 4,986 copies in the weeks following, and debuted at number 17 on the monthly Album Chart for June. Six weeks later, it peaked at number five on the Week 31 chart issue for the period dated July 21 to 27, The album's lead single "No More Dream" also debuted on the Week 25 issues (for the same period as above) of Gaon's Digital and Download charts at numbers 124 and 84 respectively, with 23,237 sales. In the US, it debuted at number 14 on the
Billboard World Digital Song Sales chart issue dated June 29, 2013, and spent three consecutive weeks on the ranking. In 2020, the single also reentered the chart, on the issue dated April 11, at a new peak of number two, with an additional 1,000 copies sold— its best single sales week on the ranking—and became the best-selling K-pop song in the US that week. According to
Billboard, "No More Dream" had sold a total of 45,000 copies in the country up to that point. ==Track listing==