Question: How long was the High Renaissance according to experts?
About the article "High Renaissance", section "Overview".

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Leadership at San Mateo High School consists of Student Government and Renaissance Leadership.
Student Government focuses solely on the traditional events of the high school which include (but not limited to) the Welcome Back Dance, Back to School Night, 8th Grade Night, Spirit Week, Little Big Game, Grid, Peace Week, International Week, Green Week, Club Faire Week, 4 School Rallies, lunchtime rallies, Prom, Morp, and much more.
Leadership was founded by Ms. Martens in 1972 where she then retired as an educator in 2000.
Renaissance Leadership was established at San Mateo in the 2008-2009 school year in effort to further train Student Leaders and Ambassadors to continue to improve the school's climate and culture.
Renaissance is a unique style of leadership where a team of 25+ diverse students are taught the Mission, Philosophies, Building Blocks, Power Concepts, Goals, and Values of Renaissance Leadership.
This course is an engaging leadership course where students highlight and recognize all of the under-recognized students concerning character, academic achievement, and continuous improvement.
Renaissance Leaders also highlight and recognize the entire faculty all-year long by thanking them for being educators and how important their responsibilities are in the role of teaching.
Renaissance strives to maintain "The Guarantee" that, 'Teachers have the Right to Teach and Students have the Right to Learn'.
Renaissance is a new way of thinking on a high school campus and by doing so, the "Recognition Gap" that exists at many schools in the country is slowly being reduced due to the measurable change and impact that it has on the entire campus.
With such positive reinforcement, Renaissance has changed student and faculty lives since the beginning of 2008 and to this very day; Renaissance Leadership continues to make a difference and help every student, and every faculty member to Dream, Believe, Achieve, and Succeed!
Both Student Government and Renaissance Leadership are taught by Ms. Sara Catalli, Math/Leadership/Renaissance Teacher & Activities Director.
2005: Awarded a Guinness World Record for hosting the largest Canned Food Drive in a 2-week period and collecting over 372,000 pounds of food for the San Mateo and Santa Clara counties  2007: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service  2008: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service  2009: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service  2010: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service / Hosted a Renaissance C.A.R.E.
Conference with an attendance of various middle and high schools across the state  2011: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service  2012: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service  2013: Recognized as a Gold Service Leadership School by the Jefferson Awards for Public Service  
To investigate if experts and non-experts experience art differently even in their eye movements, researchers used an eye tracking device to see if there are any differences in the way they look at works of art.
After viewing each work, participants rated their liking and emotional reactions to the works.
Some works were presented with auditory information about that work, half of which were neutral facts and the other half were emotional statements about the work.
They found that non-experts rated the least abstract works more preferably, while abstraction level did not matter to the experts.
Across both groups, the eye paths showed more fixations within more abstract work, but each fixation was shorter in time than those within less abstract work .
Expertise influences how participants thought about works, but did not influence at all how they physically viewed them.
In another study using eye-movement patterns to investigate how experts view art, participants were shown realistic and abstract works of art under two conditions: one asking them to free scan the works, and the other asking them to memorize them.
Participants' eye movements were tracked as they either looked at the images or tried to memorize them, and their recall for the memorized images was recorded.
The researchers found no differences in the fixation frequency or time between picture types for experts and nonexperts.
However, across sessions, the non-experts had more short fixations while free scanning the works, and fewer long fixations while trying to memorize; experts followed the opposite pattern.
There was no significant difference in the recall of the images across groups, except experts recalled abstract images better that non-experts, and more pictorial details.
These results show that people with arts expertise view repeated images less than non-experts, and can recall more details about images they have previously seen. 
  Wrote foreword: "High Tech Tennis" (1992).
By Jack L. Groppel.
Credited as photographer: "Championship Tennis by the Experts: How to Play Championship Tennis".  
 Nigeria Is Spared the Worst of AIDS, but Experts Wonder for How Long  
Girolamo Romani (Romanino) (c. 1485 – c. 1566) was an Italian High Renaissance painter active in the Veneto and Lombardy, near Brescia.
His long career brought forth several different styles.