In 2000, we learned an important lesson about portfolio diversification when technology stocks collapsed.
Nonetheless, there's an emerging consensus that a new system will need to take into account multiple measures of a teacher's performance -- value-added scores, but also classroom observations by peers and principals, lesson plans, portfolios and self-evaluations.
Don't say: "We need more films about sensible women who come into men's lives and teach them important lessons about diverse portfolio investments".
"We've solved some of the toughest design and development challenges in this new medium, and with this investment we'll apply these lessons to a portfolio of full games".
Which illustrates another investing lesson: a diversified portfolio may help protect value and alleviate the roller coaster ride that often comes with extreme overconcentration.+ Our own decision to remove Valeant has proved advantageous.
As it turned out, what didn't change much was the fundamental lessons: have a diversified portfolio, don't buy more house than you can afford, don't take on more debt than you can support, or trade on the margin.
But when you take the hits in your own portfolio, those lessons stay with you for a long time.
The teacher and the mentor create a portfolio -- lesson plans, student work and notes from workshops -- that becomes a kind of chronicle of the developing teacher.
The SCALE/Pearson edTPA electronic portfolio includes lesson planning, a discussion of student teaching placement sites, videos of candidates interacting with K-12 students, their personal assessment of the lesson, and documentation of student learning.
