As stated by the official ACT webpage, all students arriving to take a National ACT test, must present proper identification in order to be given admittance to test. Here is a list of the following forms of identification that are acceptable:
Current official photo ID: This can be a driver's license, a state-issued identification card.
ACT Student Identification Letter with Photo: You MUST present this ACT student identification letter with photo if you do NOT have a current official photo ID. http://www.act.org/content/dam/act/unsecured/documents/Identification-Letter-Form.pdf Please note that once you affix the photo id, you must have it signed by a school official.
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In stating that you need to bring a valid photo id, you must also make certain that you bring: printed copy of your ticket to the test center, #2 sharpened pencils with good erasers, a watch to pace yourself, permitted ACT calculator.
Do NOT bring: textbooks, dictionaries, scratch paper, highlighters, colored pencils or pens, correction fluid, electronic devices*(other than your permitted calculator), reading materials, food/beverages, or tobacco.
*Prohibited electronic devices include your mobile phone, media player, IPad, headphones, camera. DO NOT BRING THEM.