AOW/AIM Tactics level = [sum of passing]/5 - 2
Sum of Passing skills of your players (excluding the GK):
30 - Weak Tactic level
35 - Inadequate
40 - Passable
45 - Solid
50 - Excellent
55 - Formidable
60 - Outstanding
65 - Brilliant
70 - Magnificent
75 - WorldClass
80 - Supernatural
85 - Titanic
90 - Extra-Terrestrial
95 - Mythical
100 - Magical
105 - Utopian
110 - Divine.
Example: Sum of Passing for your players is 60.
Formula: [sum of Passing]/5 - 2 = 60/5 - 2 = 12 - 2 = 10
So your AOW/AIM tactical skill is Outstanding (10).
CA Level Formula = 0,017272a + 1,042313
where a = sum of [Form{(2*defense passing skills)+(defense defending)}]
Or better yet:
CA Skill Calculator