Do you have to have a certain amount of intelligence to get into heaven? Is there a certain level of intelligence required to get into heaven?  I would expect someone to be able to understand at least some of scripture to be saved, but how much intelligence is needed to understand what you need to be saved?
No intelligence is required.

The Bible assures us that even a fool won't go astray on the Way.


  Isaiah 35:8 (ESV) 
  And a highway shall be there, 
  &nbsp; &nbsp; and it shall be called the Way of Holiness;
  the unclean shall not pass over it. 
  &nbsp; &nbsp; It shall belong to those who walk on the way; 
  &nbsp; &nbsp; even if they are fools, they shall not go astray.


What is this Way, then?


  John 14:6 (ESV) 
  Jesus said to him, "I am the way, and the truth, and the life. No one comes to the Father except through me.


So even a fool following Jesus will be saved.

Jesus also states that the kingdom of God belongs to those such as children. Now, children can be intelligent at times, but certainly this doesn't sound like there's an intelligence requirement.


  Mark 10:14 (ESV) 
  But when Jesus saw it, he was indignant and said to them, "Let the children come to me; do not hinder them, for to such belongs the kingdom of God.