Heat oven to 350 degrees F.
Sift together flour, baking soda, and salt onto waxed paper. Set aside.
Beat together butter, granulated sugar, brown sugar, eggs, and vanilla in a large bowl until fluffy.
Stir in flour mixture until well blended. Stir in oats and chocolate chips.
Drop batter by rounded tablespoonfuls, 2 inches apart, onto ungreased cookie sheets. Bake at 350 degrees for 10-12 minutes or until lightly browned. Transfer cookies to wire rack to cool.