Koscielny believes that the draw is a positive result that has allowed Arsenal to stay on track for a place in the last 16.
He told the club's official website: "We are away so it's a good point against a difficult team. When we went 2-0 [up], I thought we could keep this result. We tried to come back but Schalke are a very good side.
"Now we have two games with the next one at home against Montpellier. I think it's very important to win that one.
"It's a very difficult group but we have the cards in our hands to qualify for the [next stages of the] Champions League."
Arsenal currently sit in second place in Group B, one point ahead of Greek champions Olympiakos.