House Rules
Every 3 levels, you may raise one of any attribute by one point (up to your allowed maximum). So at level 3, you could raise a 15 strength to 16, and then to 17 at level 6, and so forth.
Every 5 levels, you may raise your prime requisite attribute by 1 point (such as Wisdom for clerics).
Yes, this means that at level 15 you may raise two attributes.
If desired, you may substitute experience points for this increase in an attribute.
There may be limits, and as we get into the game, I will need to decide these, but this is my way around the rule that attributes always stay the same, which doesn't make sense because a fighter will increase strength and agility with training, etc.