Is there a field that tags stories that are in current print

[Jennifer McLaughlin]

I need a field that shows which sprint / stories are in the current sprint – does that already exist?

[Jennifer McLaughlin]

No I basically need a tag that says this is part of an open sprint -- trying to integrate with a more robust reporting system and this would make it easier.

[Jobin Kuruvilla [Adaptavist]]

You can search for issues in open sprints in issue navigator but looks like you are looking for a field on the issue itself. If so, take a look at JIRA calculated fields or scripted fields. Some effort is involved in developing one.

[Jobin Kuruvilla [Adaptavist]]

Do you mean a field that shows all stories in a sprint? There is no field for that but you can see this information on issue navigator or on the board itself (which I am sure you already know).