Are you defining preferential treatment as outreach? Thats not only a very odd definition, but also creates the idea that glass ceilings is some form of outreach for male leaders.
The definition of "Outreach", is an method that are used to fill in the gap in the services provided by mainstream means, to the purpose of reaching groups who otherwise would not be aware of existing services (In this case, education). This doesn't do that. Mozilla mentor program for example is one that does. Compare and see the difference.
women-exclusive classes do not work, and are indeed counter-productive. Any research of this has proven this point. When the Sweden government body tried it, it was found to be ineffective, counter-productive (created more separation between sexes), and declared illegal in the last years. Sadly, given the current gender politics, little money has been spent to answer why it failed, as it is easier to simply ignore the fact that it failed.
So to reiterate, This is not one of the solutions, its a illusion of an solution that do harm rather than good. It is worthless, because it do not work and causes harm. It is lazy, because other groups has shown (like Mozilla) how to do it right. In the real world, thats how progress work. You discard what is a step backward, and only use what is a step forward. Small step backwards are still backward steps.
What is baffling is how people keep disregarding any sense of scientific method. Just because a previous theory is thought to be working, one should not be ignorant to new information.