The short answer: 20 (composite score) is the national ACT average. About half of students score above that, and half of students score below. The top 25% of ACT takers score about 24 or more, so if your score is above 24, that's excellent.
1 SavinâNorov machine gun. 2  Space Network, a NASA relay satellite system. 3  Sthene, an obsolete unit of force or thrust in the metre-tonne-second system of units. 4  Substantia nigra, a brain structure. 5  Supernova, a stellar explosion, in astronomy and cosmology.  Tin, a metallic element with chemical symbol Sn.
Girls' Generation (Hangul: ìëìë; So Nyeo Si Dae), also known as SNSD, is a South Korean girl group formed by S.M. Entertainment. The group is composed of eight members: Taeyeon, Sunny, Tiffany, Hyoyeon, Yuri, Sooyoung, Yoona, and Seohyun.ntertainment formed a subgroup of Girls' Generation named TTS (also known as TaeTiSeo), which is composed of three members: Taeyeon, Tiffany, and Seohyun. In May 2012, the subunit released their debut EP, Twinkle. The trio later released their second EP, Holler, in September 2014.